... hours5.duration time:about 3-4hours6.Power: 0.6W7.switch: AC-Off-DC8.The red indicator light will be ... set in an ordinary lamp holder ,It has two switches,i.e.AC,DC.when the switch is set to AC ... position,and the power was fulled,It could be used as an energy-saving lamp ... was cut, It could be used as emergency lamp.when the switch was set to DC position,it will automatically light ...